/Engine/Plugins/Editor/GeometryMode/Source/GeometryMode/Classes/GeomModifier_Extrude.h
true if the delta was handled by this editor mode tool.
virtual bool InputDelta ( class [FEditorViewportClient](API\Editor\UnrealEd\FEditorViewportClient) * InViewportClient, [FViewport](API\Runtime\Engine\FViewport) * InViewport, FVector & InDrag, FRotator & InRot, FVector & InScale )